Thread: Quietest 2.5" Mufflers for 69 GTO?
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Old 07-11-2019, 09:12 AM
71 T/A 71 T/A is offline
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Join Date: Dec 1999
Location: North Carolina
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I had Dynomax Super Turbos on a 72 Formula and they droned big time at 2000-2200 rpms. Installed Goerlich Xlerators and drone is gone. No way would I used those mufflers again. Terrible drone.

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